Machine for applying adhesives to can-heads.



P. KRUSB. MACHINE FOR APPLYING ADHESIVES TO CAN HEADS.

APPLICATION FILED SEPT. 24, 1909.

Patented Mar. 14, 1911.

' 2 SHEETS-SHEET 1.

I" Q D 17% L A INVENTOR WITNESSES: 7 l m V 1 1' Afzdrzzgxv, i

P. KRUSE. v MAUHINE FOR APPLYING ADHE$IVES T0 CAN HEADS.

Patented Mar. 14, 1911.

' APPLICATION FILED SEPT. 24, 1909.

z SHEETS-SHEET 2.

FIG. 4.

FIG. 3.

WFA.

. WITNESSES:

PETER KRUSE, OF NEW YORK, N. Y.

MACHINE FOR APPLYING ADHESIVES T0 CAN-HEADS.

Specification of Letters Patent.

Patented Mar. 14, 1911.

Application filed September 24, 1909. Serial No. 519,348.

To all whom it may concern: I Be it known that I, Pn'mn KRUSE, a citizenof the United borough of Brooklyn, county of Kings, city and State ofNew York, have invented cer-' tam new and useful Improvements in Machines for Applying Adhesives to Can- Heads, of which the following is aspecification.

' the chucks, a cementing roll being provided V beneath more clearly,

" 1 Referring 'to the drawings, let

for each chuck, with automatic means for 'moving such rollers into'contact with the revolving can head. Automatic devices are also providedfor feeding the can heads into.

and out of the machine, in cooperation with means for closing an emptychuck to grasp an entering can head, and for opening a chuck to releasea finished. can head to per mit it to be ejected from the machine.

Figure 1 of the accompanying drawings is a plan of the machine, certainparts being broken away or omitted to show the and the view being thuspartially a horizontal section; Fig. 2 is a vertical section in theplane of the line 2-2 in Fig l, this view being upon a larger scale thang. I; Fig. 3 is a section showing partof Fig. 2 on a still larger scale.Fig. 4 is a plan of the operating cams; Fig. 5 1s a fragmentary sectionon the line 5---5 in Fig. 2,- Fig. 6 is a fragment of Fig. anotherconstruction of cementing wheel.

A. designate a supporting frame or standard of any suitable constructionadapted to provide bearings for the movin parts. On top of this standardis a tab e B. Through the middle of this table projects vertically afixed shaft or stud C which is suitably secured to hold it non-rotative.On' the table B is mounted a trough D serving as a receptacle for theadhesive material or cement.

States, residing in the the can heads.

This invention relates to apparatus for parts 7 5, showing This troughis preferably annular, forming a complete circle. Just within and abovethe trough are located a series of chucks E E for grasping, revolvingand carrying These chucks are composed of upper and lower pads or disksa and b which receive the-can heads between them, suitable mean-sbeingprovided for closing them together to clamp the head and for separat-ingthem to release it. Suitable means also is provided for revolving thechucks and for swinging them around in a circular path'or orbit. Themeans shown consists of a turn-table or carrier F comprising a centralhub or sleeve G, an upper spider or disk H carrying the upper pads 'withits central hub fixed on the sleeve G, and a lower spider or disk Jhaving its central hub alsofixed on the sleeve G. The tu1ntablethus'formed is revolved. continuously through the medium of miter gearsK K from a driving shaftL carrying a driving pulley M or other meanspower. For revolving the chucks a stationary gear N is provided fixedlymounted on the stationary stud or post C, as shown in F'g. 2, 'and theupper spindles c c of the chucks have keyed upon them pinions a? d whichmesh with the teeth of this stationary gear, thearrangement thusprovided constituting sun and planet wheels, whereby as the turn-tablerevolves and causes the chucksto travel around in a circular path,'theirpinions are revolved by engagement with the teeth of the fixed sun wheelN.

For opening and closing the chucks, a

suitable means is provided which will be described.

The upper or rotatively driven pad a of each chuck is carried at aninvariable height by the mounting of its spindle in one of the arms ofthe upper spider H. The lower disk or pad 6 of each chuck is mounted torevolve idly and is movable up and down. Although the specificconstruction for accomplinshing this is immaterial, yet the constructionshown, which is well adapted'to the purpose, will now be described. Eachpad or disk Z2 is mounted on a spindle e which turns freely in a sleeveor bushing j, which is held movably within a socket in the hub g of thesleeve f is movable up an down. being pressed downwardly by a spring hlocated in a counter bore surrounding the sleeve. The lower portion ofthe sleeve is of larger for transmitting carrier snder J. The

ing means.

diameter and forms a head which projects beneath the hub and is engagedby a cam P. The spindle e projects down only part way through the sleeveand rests upon the top of another sleeve 2' therein which is ressedupwardl by a 9 ring 7'. The cam T is formedv in t e arc 0 a 011'016, asshown in Fig. 4, the open space between its ends corresponding to thatportion of the travel of the chucks wherein they are open and inactive.The cam P is fastened upon the table 13 just within the trough D, andunderlies the path traversed by the axes of the chucks in their circulartravel. At its engaging end it has an incline P which receives the lowerend or head of each sleeve f and lifts it-against the pressure of itsspring 11, thereby lifting the parts carried by this sleeve, includinthe pad I). The lifting movement is slightly greater than that whichwould bring this pad into grip with the pad a, in order to thereby comress the spring 7', which latter s ring is sti enough to grasp the canhea with the requisite force, and yet is adapted to yield so as to comnsate for varying thicknesses of hea s and for any accidentalirregularities. When a "chuck reaches the opposite end P" of the cam P,the sleeve f rides down off the end thereof, which is preferably alsoinclined, thereby lowering the pad I) and opening the chuck. To insure tat the expansion of the spring j shall not hold up this pad, or in otherwords to pull down this pad against the upward stress of the spring somestop such as a transverse pm or upward movement of the rotative spin lee. The detailed construction of the chuck thus described may be greatlyvaried within the rinciple of this inventiong T e lower member or spiderJ of the turntable is formed withor carries a disk Q of diametersufiiciently large to extend artl .over and preferably to entirel c'overt e ad hesive trough D. The plate (5 is preferably formed separately J.It" forms the carrier for the means for applying adhesive to therevolving heads.

he applying means shown consist each of p a cementing roller or roll R,and a lever S carryingthis roll on one arm and having its opposite armortail projecting downwardly into engagement with a cam T. The

lever S is suita 1y connected to the carrier, preferably by beingfulcrumed to a pendant lug I carried thereby, and formed preferably on aremovable cover Q, one of which is provided for each adhesive-apply- Aspring m is provided for pressin up the arm of the lever carrying therol R and pressing down the tail of the lever into engagement with thecam T.

The roll IR is located outside of the chuck and in position to bedirectly beneath the spring key In, is provided for limitin the from-thespider or disk I portion of the can head to which the adhesive is to beapplied, and when pressed up by the spring moves u through a slot oropening into contact with the can head, as shown in Fig. 5, and on theright in Fig. 2. The cam T is conveniently arran ed inside the adhesivetrough D, in whic case the entire lever S for each of the adhesiveapplying means is placed within this tron h. The cam T is arran ed toforce the adfi sire-applying roll down out of action and consequentlycorresponds in position :with

the open portion or space between the ends of the cam P, as shown inFig. 4.

In operation, a can head is first introduced between the separated padsof a chuck while the latter is moving through the open space of the camP; upon encountering the end P the chuck is closed and grasps the canhead and immediately begins to revolve it. During this time the applyingroll R is drawn down out of the way by the action of the cam T.Immediately after the chucking of the can head the corresponding lever Sruns off the-end ofthe cam T, and'consequently the roll R. is drawn upby'the m, into contact with the revolvin can head. The rotation of thecan head is communicated frictionally to the roll R, which thusrevolves, and since its lower'portion dips into the bath of adhesive inthe trough D, itcarries up a portion'of this adhesive and applies ittothe can head, the adhesive being thus applied to each head in a circularline, the position of which depends upon the precise adjustment of theroll R relatively to the can head. This operation .continues during thetravel of the can head around in the orbit traversed by its chuck,

until shortly before the chuck is opened the entering end "I" of the camTforces u the tail of the lever S and thereby forces own the roll R outof action, whereupon the chuck sleeve drops off the end P of the cam P,and the chuck is opened to release the can head, which is then carriedout of the-machine.

The present invention further provides an automatic feed for feeding thecan heads into the chucks and for removing the finishecl headstherefrom. A feed table U isprovided on which the can heads to beoperrated on are placed, Directly over this re. volves a feed disk Vwhich is 'eared to'turn at a'speed-corresponding wit that of theturn-table F. The disk V has notches n n for receiving the can heads andfeeding them. In the construction shown these notches are equal innumber to the number of chucks on the turn-table F, and accordingly thedisk V is geared to revolve at ual speed with that of the turn-table.his gearing is shown in dotted lines in'Fig. 1, where a miter gear 10.takes motion. from a gear K and communicates it to a miter gear heads inplace in the feeding'notches. The

can heads, (one of which is indicated by the dotted circle w) are. thuscarried successively into coincidence with the successive chucks. Tobetter insure the centering of the can heads, a disk V notched similarlyto the disk V is fastened on the turn-table F, as shown, so that as thetwo disks revolve the can head is caught between two coinciding notchesand thereby brought into coincidence with the chuck, as shown at w inFig. 1. The cam P is so placed that at this instant the'chuck closesupon the can head. For feeding out the finished can heads as they arereleased, any suitable ejector may be provided. I prefer to utilize forthis purposethe opposite edge 9 of the guide bar p, which is arranged ata suitable angle to serve as a switch to push off the can heads.

This guide bar is fastened to the table U, and its end projects over therevolving disk or table Q, as shown in Fig. 1.

To get access to' the adhesive trough D or to the rolls R or theirlevers, any one or more of the slides Q, may be displaced by slidingthem radially outward in the ways provided for them in the disk Q.In'Fig. 1 a slide is partly removed iii the osition' Q the slides are inplace they are fastened securely to the table Q, by any suitableclamping means, such as by' the provision ofmetal strips 7 1 formingpart of their slideways and having screws 8 for forcing them down togrip the edges of the slides The slides Q may also be set outwardly orinwardly in order to. displace the cementing rolls R to different radialdistances from the centers of their respective chucks, and thereby adaptthe machine for applying cement to can heads of varying diameters. Thetable U is spaced apart from the turn-table Q at t sutficieutly to allowfor any necessary outwardv adjustment of the slides Q. I

An important featureis the construction of the chucks E. E so that theygrasp the can heads yieldingly, whereby not only are they caused toadapt themselves to. heads of vary-' ing thickness, but they maycompensate for irregularities in the heads. .Thetensions of the springsj are such that the can heads are gripped with substantially uniformforce, notwithstanding any normal variations in thickness. The machinetherefore'requires no adjustment for variations in thickness of theheads, even taking into considerationthe considerable degree ofvariation in the annular corrugations or ribs with which can heads areusually provided. By making the pads a b of'the chucks small enough toenterwithin the outer flange of can heads of entire range of can headsmay be' provided for either by one set-of pads' 'of minimum size, orthe-provision oftwo'or perhaps three sets, which may onjocc'asion besub'sti-j tuted .foroneanother; Another important feature is that thecelnentingrolls are spring-seatei so as to ad-' just themselvesautomatically to" the "flanges to any inequalitiestherein. "Canheads'are sometimes distorted in the dies vof the punch ing press, orsubsequently, so that the flange to which the cement isto be applied isnot in a plane exactly parallel to the inner p'or tion of the head.I-n'the event of 'any such distortion the yieldingly' mounted-cement ingroll will automatically rise-and fall as the can head revolves, thusadapting itself to the inequalities ofsurfaoe, and applying the cementthereto as etliciently as if fthe head were perfectlytrue. Bycausingfthe cementing rolls to travel in the bath bf adhesive materialin the'annular"troi'rght feach roll carries up a liberal-quantity of thadhesive and appliesit directly "and pi bm u to the flange of the canhead'with the minimum of loss by'evaporation. Duri ngflthe travel of thehead while carrie'd'iIi its'chuck' terial to the flange of the can head.-f The progressive movement-of the cement-ing rolls R and their levers Sthrough the trough also around nearly the complete circular move' mentof the latter, the adhesive material-is When Thus is insured a; verythorough application of the adhesive maP has the effect to keep thecement solution or j composition therein thoroughly stirred,,and hence t'maintain-it in homogeneous condition. In the case ofa'vaporizablesohition such as arubber cement, undue evaporation visprevented by the disk Q, which covers over the cement receptacle except"at the openings through which the rolls B emerge.

It is advantageous to form the applyingrolls R with a knurled orserrated periphery, as shown in Fig. 6. For certain quali ties ofadhesive materialythis greatly facilitates the applying of a suitablequantity-of adhesive) The cementing material which is carrled up in thenotches betweenthe serra tions, cannot be squeezed out by forciblecontact of therim of the wheel with the cam heady'but is carried intocontact with the latter" and remains adhering thereto in a band or fihnof suitable thickness. This effeet can onlybe secured by causing theserrated roll to turn directly in the bath of ad-v hesive. v

The machine provided by my invention is adapted to rapidly andeffectively apply 75" of the can" heads, and's'o as to'yield-readilvrubber cement or other adhesive material to the flanges of can heads,being entirely automatic except for the services of an attendant toguide the heads into the notches of the feeding disk V. The machinerequires but little supervision, and for changing from one size of headto another it involves the minimum of adjustment. For this 'chan e ofcourse the disks V and W require to replaced by disks having notches ofthe necessary size to fit the size of can headsto be operated upon.

The machine provided by my invention is subject to considerablemodification in matters of detail and construction. Those features whichare deemed to be essential to. my invention are set forth in thefollowing claims. a

Certain parts or features of my invention are applicable generally tomachines for grasping or manipulating can heads or analogous parts, andare not necessarily confined in their application to machines forapplying adhesive material to can heads.

What I claim is 1. The combination of a revolving carrier, a pluralityof chucks carriedthereby, each comprising opposite pads pressedyieldingly together and adapted to grasp a canhead between them, and torevolve on an axis perpendicular to the plane of the canhead, means forrevolving said chucks,n1eans for opening and closing the chucks, andmeans cooperating therewith for applying adhesive material to can headsheld by said chucks, comprising a cementing roll adjacent to each chuck.

2. The combination of a revolving carrier, a plurality of chucks carriedthereby, means for revolving said chucks, means for opening and closingthe chucks, and means for applying adhesive to can heads held by saidchucks comprising a cementing roll adjacent to each chuck, and meansfol-moving said roll into and out of contact with the can head.

3. The combination of a revolving carrier, a plurality of chucks carriedthereby, means for revolving said chucks, means for openingand closingthe chucks, an annular trough for containing adhesive material,cementing rolls held in said trough by the carrier, and means for movingsaid rolls into and out'of-contact with can heads carried by saidchucks.

4. The combination of a revolving carrier, a plurality of chucks carriedthereby, means for revolving said chucks, means for openin and closingthe chucks, an annular troug for containing adhesive material, cementingrolls carried in said trough by the carrier, levers on which said rollsare-mounted, and a cam acting on said levers for movin said rolls intoand out of contact with can eads held by said chucks. a

5. The combination of a stationary vessel for containing adhesivematerial, a revolving carrier, and adhesive applying means mounted onsaid carrier and comprisin oementing rolls-traveling in thebath 0adhesive in said vessel.

6. The combination of an annular, trough.-. for containing adhesivematerial, a-revolving I carrier, and adhesive applying means mounted onsaid carrier and com ising cementing rolls traveling in the batli saidtrough.

7. The combination of an annular stationof adhesive in ary trough forcontaining adhesive material,

a revolving carrier having chucks for bolding the can heads, andadhesive applying means com rising levers mounted on sai carrier, ancementin rolls carried b said levers so as to travel in the bath ofadesive in said trough and means for moving said levers to bring saidrolls into and out of contact with can-heads held by said chucks.

8. The combination ofa stationary tron h for containing adhesivematerial, a revo ving carrier comprising a plate for covering saidtrough, and adhesive applying means carried by said carrier andcomprisin cementing rolls traveling in the bath 0 adhesive and movablethrough openings in said cover.

9., The combination with a revolving chuck for holding a can head, of acementing roll, a spring acting to press said roll against the can headwhereby to yieldingly engage the latter and apply cement thereto, and acam adapted to retract said roll against the stress of said spring.

10. The combination with a revolving chuck for holding a can head, of acementing roll, a lever carrying said roll, a spring for pressing saidroll upwardly into yielding engagement with the can head, and a camacting upon said lever for forcing the roll downward out ofengagementagainst the stress of said s ring.

11. The com ination of a revolving carrier, a luralitvof chucks carriedthereby, means or revolving said chucks, cementing rolls carried by saidcarrier, springs for pressing said rolls u into contact with can headscarried by sai chucks, and a cam for forcing said rolls down out ofcontact therewith against the stress of said springs.

12. The combination of a revolving carrier, a plurality of chuckscarried thereby, means for revolving said chucks, a vessel forcontainin' adhesive material, cementin rolls carried y the carrier,levers on whic said rolls are mounted, springs acting on said levers topress said rolls into contact with can heads carried by said chucks, andan annular cam acting V forcing said rolls out of contact with the canheads.

- 113. The combination of a revolving car-- on said, levers for sec,

rier,a' lurality of chucks carried thereby, means or revolving saidchucks, an annular cam for opening and closing the chucks, cementingrolls carried by the carrier, springs for pressing said rolls up intocontact with can heads carried by said chucks,

and an annular cam for forcing said rolls down out springs.

14. The combination of a revolving carrier, a plurality of chuckscarried thereby, radially adjustable parts carried by said of actionagainst the'stress of their carrier, and cementing rolls-carried by saidadjustable parts, whereby t e rolls may be set to varying distances fromthe centers of their respective chucks to adapt them for can heads ofvarying sizes.

15. The combination of a revolving carrier, a plurality of chuckscarried thereby. radially adjustable slides carried by said carrier, andcementing rolls carried by said adjustable slides, whereby the rolls maybe set tov varying distances from the centers of their respective chucksto adapt them' for can heads of varying sizes.

16. The combination of a circular vessel for containing adhesive, arevolving carrier, a disk carried thereby covering said vessel, radialslides carried by said disk, and cementing rolls carried by said slides,whereby said rolls may be adjusted to varying distances from the center.

17. The combination of a revolving chuck comprising opposite padspressed yieldingly together and adapted to grasp a can head elasticallybetween them, a. cementing roll and a spring for pressing said rollyieldingly against a can head held by such chuck and cams for openingand closing said chuck and for retracting said roll..

18. The combination with a revolving chuck adapted to grasp a can head,of-a cementingroll having its peripheral applying surface serrated, anda receptacle con taining adhesive material in which said roll turnswhereby its indentations are filled with adhesive which is carried tothe can-head V and applied thereto by adhesion.

19. A revolving chuck for carrying a can head comprising a revolubleupper pad, a revoluble and vertically movable lower pad, a spring forpressing the lower pad down to open the chuck, means for pressing saidpad upward to close the chuck, and a spring interposed between'suchmeans and the pad to cause it to grasp the can head yieldingly combinedwith adhesive applying means adapted to press'yieldingly against acanhead held in such chuck.

20. A revolving chuck for carrying a can head comprising arevolubleupper pad, a rcvoluble and vertically movable lower pad,

. a sleeve carrying'said lower pad, a spring for pressing down thesleeve and lower pad to open the chuck, means for pressing said sleeveupwardly to close the chuck, and a spring between said sleeve and padadapted to yield when the pad engages the ca'nhead combined withadhesive applying ineans adapted to press yieldingly against a canheadheld in such chuck.

21. A revolving chuck for carrying a can head comprising a revolubleupper pad, a i revoluble and vertically movable lower pad,

asleeve carrying said lower pad, a spring for pressing down the sleeveand lower pad 1 to open the chuck, means for pressing said sleeveupwardly to close the chuck, said pad having a. stud'movable verticallyin said sleeve, a stop to limit its upward movement whereby to draw thepad down, and a spring between said sleeve and pad adapted .to yieldwhen the pad engages the can head combined with adhesive applying meansadapted to press yieldinglyagainst a canhead held in, such chuck.

:22. The combination of a revolving carrier, comprising a horizontaldisk, a plurality of chucks carried thereby, adapted to receivecan-heads, means for opening and closing the chucks and means forfeeding can heads to said chucks comprising a tableand a pair ofrevolving disks of a thickness approximating that of the can-heads, andhaving notches to receive the can heads, one of said disks mounted onsaid carrier with its notches in coincidence with the chucks, and theother revolving adjacent thereto over the surface of said table to bringits notches into coincidence with those of the carrier disk and therebycenter the head with reference to the respective chucks.

23. The combination of a revolving carrier comprising a horizontal diskprovided with can-head receiving notches, a plurality of chucks carriedby said carrier on vertical axes, comprising pairs of pads adapted tocarry can-heads in the plane of said disk, means for opening and closingthe chucks, means for automatically feeding can-heads to said chucks andfor centering them, comprising a table and a revolving disk of athickness approximating that of the canheads, and having notches toreceive the can heads, one of said disks mounted on said carrier withits notches in coincidence with the chucks, and the other revolvingadjacent thereto over the surface of said table to bring its notchesinto coincidence with those of the carrier disk and thereby center thehead with reference to the respective chucks, and means for feedingcan-heads out from said chucks comprising an ejector plate projectingover the path of'sai d chucks and adapted to enter the space between thepads of the opened chucks and engage the canheads which have beenreleased by the open ing of the chucks and guide them out beyond saidcarrier.

24. The combination of a revolving carrier,.a stationary vessel belowsaid carrier which said rolls are mounted which enter the for containingadhesive material, and a cesaid bath and are adapted to stir the saidmenting roll revolving in said bath of aidadhesive'material as theytravel. hesive material and adapted'to apply said i g In witnesswhereof, I have hereuntohl 5 adhesive material to 'a can head or similarsigned my namein the presence of two subobject carried over said roll. 1scribing witnesses.

25. The combination of a revolving carrier, a stationary vessel belowsaid carrier for containing adhesive material, cementing Witnesses: I Hrolls carried by said carrier and traveling in FRED. H. McGAnm, a thebath of adhesive material, levers on, Cnannm EDWIN Ponmnn.

PETER KRUsE.

